Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9AMG callsign genealogy
Currently held by Koechel, Martin W
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9AMG's current licensee, walking backwards.
- Grossmeier, Alan MWIgranted 2016-01-21cancelled 2016-02-27
Successor callsigns
Callsigns held now by people who previously held K9AMG.
- Koechel, Martin WNHgranted 2022-05-21
All historical holders
Every license row we've seen with the callsign K9AMG, oldest first.
- GILMORE, ARMOND H GA1988-12-27 → cancelled 2000-12-28
- Koechel, Martin W NH2009-11-13 → cancelled 2012-08-17
- Grossmeier, Alan M WI2025-12-12 active